James law



(N o Model) A J. LAW.

INSTRUMENT FOR MILKING cows.

N0. 893,161. Patented Nov. 20,1888,

UNITED STATES JAMESLAlV, OF ITHACA, NEW YORK.

INSTRUMENT FOR MILKING COWS.

SPECIFICATION forming part of Letters Patent No. 393,161, dated November20, 1888.

Application filed November 26, 1887. Serial No. 256,255.

To all whom it may concern.-

Be it known that I, JAMES LAW, a citizen of the United States, residingat Cornell University, Ithaca, in the county of Tompkins and State ofNew York, have invented a new and useful Instrument for Milking Cows andRemedying Obstructed Teats, of which the following is a specification. I

My invention consists of an instrument in which a series of three ormore diverging springs, of steel or other suitable material, are broughttogether at one end and firmly united or welded into ablunt, smooth,slightly-rounded point, and diverge from such solid point,so as toinclose a conical space, and which, by the compression of the divergingstems or springs, may be resolved into a simple narrow straight stem foreasy and safe introductioninto the teat and extraction from the same,and which, by the approximation of the free ends only of the divergingsprings, may be resolved into an elongated open lozengeshaped objectcapable of holding the milk-duct and its outlet open when introducedinto the teat. The springs I have constructed of fine wire, made ofspring-steel, and plated; but other material sufficiently strong andelastic will serve the purpose.

In the accompanying drawings, Figure 1 is a side view of the instrumentin its relaxed condition. Fig. 2 is a View of the instrument with itsdiverging springs compressed into a straight stem for introduction intothe teat;

(No model.)

and Fig. 3 is a view of the same as expanded in its median part in theinterior of the teat, so as to open a free channel for the passage ofthe milk,o'r to hold the walls of the milk-duct apart, to overcomestricture or other obstruction.

Similar letters refer to corresponding parts throughout the severalviews.

Ais the solid point ofconvergence and union of the different divergingsprings.

B represents the elastic diverging springs or branches.

I am aware that prior to my invention a milking-machine had beenconstructed with a spring outside the teat and operating on alongitudinally-bisected tube, which was inserted into the teat, and thenseparated the one half so as to inclose a conical space, substantiallyas set forth.

JAMES LAW. \Vitnesses:

G. P. DRURY, A. J. MILLER.

